Testing method for monitoring depth of scouring pit in real time, aluminum plastic film and soft package lithium ion battery

The invention discloses a test method for monitoring the depth of a punching pit in real time, an aluminum plastic film and a soft package lithium ion battery, and the test method comprises the steps: a servo motor is connected with a punch, moves downwards to a punching position for punching, and monitors the feeding amount deviation of the punch in real time through a displacement sensor; the method comprises the following steps: introducing laser to scan a pit punching surface and a non-pit punching surface of a punched aluminum plastic film, receiving angles corresponding to diffuse reflection laser peak light intensity by using a laser receiver, performing fitting calculation to obtain position coordinates of each surface and further obtain the pit depth, receiving pit depth data in real time by a PLC (Programmable Logic Controller) end, and judging whether compensation is needed or not according to a set standard; if compensation is needed, automatic online compensation is directly carried out, if the c